Finding the Third Proportional to 9,607.50 and 12,939.75

Step by Step Solution

1. Step 1: Write the proportion equation
   9,607.50 : 12,939.75 = 12,939.75 : x
2. Step 2: Convert to fraction form
   9,607.50/12,939.75 = 12,939.75/x
3. Step 3: Cross multiply
   9,607.50x = 12,939.75 × 12,939.75
4. Step 4: Simplify right side
   9,607.50x = 167,437,130.06
5. Step 5: Solve for x
   x = 167,437,130.06/9,607.50
6. Step 6: Final answer
   x = 17,427.75